Moles to grams and grams to moles

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What is a mole in chemistry?

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A mole is a unit of measurement used to express amounts of a chemical substance. It is defined as the amount of substance that contains as many entities (atoms, molecules, etc.) as there are in 12 grams of carbon-12.

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How do you convert grams to moles?

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To convert grams to moles, use the formula: Moles = Mass (g) / Molar Mass (g/mol).

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How do you convert moles to grams?

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To convert moles to grams, use the formula: Mass (g) = Moles x Molar Mass (g/mol).

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What is the molar mass of silicon dioxide (SiO2)?

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The molar mass of silicon dioxide (SiO2) is approximately 60.08 g/mol.

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Calculate the number of moles in 30.0 grams of silicon dioxide (SiO2).

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0.50 moles.

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What is the molar mass of potassium sulfide (K2S)?

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The molar mass of potassium sulfide (K2S) is approximately 110.26 g/mol.

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Calculate the number of moles in 25.0 grams of potassium sulfide (K2S).

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0.23 moles.

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What is the molar mass of potassium permanganate (KMnO4)?

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The molar mass of potassium permanganate (KMnO4) is approximately 158.04 g/mol.

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Calculate the number of moles in 0.75 grams of potassium permanganate (KMnO4).

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0.0047 moles.

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What is the molar mass of cobalt(II) nitrate (Co(NO3)2)?

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The molar mass of cobalt(II) nitrate (Co(NO3)2) is approximately 182.9 g/mol.